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TECHNICAL &
SERVICE MANUAL

OUTDOOR UNIT : GRF148MR5I

GRF198MR5I
GRF248MR5I
GRF318MR5I

GRF148MR5I

GRF318MR5I

GRF198MR5I
GRF248MR5I

DC INVERTER MULTI-SYSTEM AIR CONDITIONER

Outdoor Model No.

GRF148MR5I

GRF198MR5I

GRF248MR5I

GRF318MR5I

Capacity

4.0kW

5.6kW

6.8kW

8.0kW

Product Code No.

GRF148MR5IAA (1 852 349 49)

GRF198MR5IAA (1 852 349 50)

GRF248MR5IAA (1 852 349 51)

GRF318MR5IAA (1 852 349 52)

REFERENCE NO.

700740

< Applicable Indoor Units >

Wall mounted type

For details about the combination, refer to
"Unit Combination Table" in the Appendix of
this manual.

MCAF78MR5I
MCAF98MR5I
MCAF128MR5I
MCAF188R5I
MCAF248R5I

NOTE

Destination: Europe

RoHS

WARNING

•

This product does not contain any hazardous substances prohibited by the

RoHS

Directive.

• You are requested to use

RoHS

compliant parts for maintenance or repair.

• You are requested to use lead-free solder.

FILE NO.

Do not vent R410A into atmosphere : R410A is a fluorinated greenhouse gas,
covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1975.

F-GAS REGULATION (EC) No 842 / 2006

Содержание GRF148MR5I

Страница 1: ...icable Indoor Units Wall mounted type For details about the combination refer to Unit Combination Table in the Appendix of this manual MCAF78MR5I MCAF98MR5I MCAF128MR5I MCAF188R5I MCAF248R5I NOTE Destination Europe RoHS WARNING This product does not contain any hazardous substances prohibited by the RoHS Directive You are requested to use RoHS compliant parts for maintenance or repair You are requ...

Страница 2: ...on especially a damp or humid location If a leakage breaker is not installed electric shock can occur When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the...

Страница 3: ...1 Precautions before Performing Inspection or Repair 8 2 Trouble Diagnosis by Error Monitor Lamps 8 3 Checking the Outdoor System 8 4 Trouble Diagnosis of Each Part 8 5 Trouble Diagnosis of Fan Motor 9 REFRIGERANT R410A SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9 1 Characteristics of New Refrigerant R410A 9 2 Checklist before Servicing 9 3 Tools Specifically for R410A 9 4 Tubing Installation Procedu...

Страница 4: ...APPENDIX A INSTALLATION INSTRUCTIONS APPENDIX B UNIT COMBINATION TABLES A 1 A 2 Page 4 ...

Страница 5: ...5I YES YES YES YES YES GRF318MR5I 2 Room 2 Room 4 Room 4 Room YES YES YES YES YES MCAF78MR5I MCAF98MR5I MCAF128MR5I MCAF188R5I MCAF248R5I NOTE 1 The table lists the wall mounted type of indoor units as representative models 2 For details on the applicable indoor units other than the wall mounted type refer to the catalog 5 ...

Страница 6: ...GE Maximum Minimum Maximum Minimum 32 C D B 23 C W B 19 C D B 14 C W B 27 C D B 16 C D B 43 C D B 19 C D B 24 C D B 18 C W B _ D B 15 C W B Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Heating 6 ...

Страница 7: ... 1 7 Electric Expansion Valve DC Twin Rotary Inverter dB A Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit C O P kW Performance Power Factor 98 W W Power Source BTU h Capacity m3 h E E R W W 4 32 230V Voltage Rating Type Number of Connectable Indoor Units 6 15 Max Capacity of Operating Indoor Units kW Number of Operatable Indoor Units 4 5 15 400 2 2 to 5 5 7 500 to 18 800 Hea...

Страница 8: ...on Valve DC Twin Rotary Inverter dB A Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit C O P kW Performance Power Factor 98 W W Power Source BTU h Capacity m3 h E E R W W 3 30 230V Voltage Rating 2 Room Multi Outdoor Unit Type 2 Number of Connectable Indoor Units 8 65 Max Capacity of Operating Indoor Units kW 2 Number of Operatable Indoor Units 7 3 24 900 2 4 to 8 4 8 200 to 2...

Страница 9: ...Expansion Valve DC Twin Rotary Inverter dB A Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit C O P kW Performance Power Factor 98 W W Power Source BTU h Capacity m3 h E E R W W 3 40 230V Voltage Rating 4 Room Multi Outdoor Unit Type 4 Number of Connectable Indoor Units 12 2 Max Capacity of Operating Indoor Units kW 3 Number of Operatable Indoor Units 8 6 29 300 3 4 to 9 0 11 ...

Страница 10: ...Expansion Valve DC Twin Rotary Inverter dB A Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit C O P kW Performance Power Factor 99 W W Power Source BTU h Capacity m3 h E E R W W 4 64 230V Voltage Rating 4 Room Multi Outdoor Unit Type 4 Number of Connectable Indoor Units 14 7 Max Capacity of Operating Indoor Units kW 4 Number of Operatable Indoor Units 9 4 32 100 3 4 to 9 8 11 ...

Страница 11: ... Type Compressor Model Nominal Output Compressor Coil Resistance Ambient Temp 20 C Ohm DC Twin Rotary Hermetic C 6RVN93H0M 1 000W R S S T T R 0 482 0 482 0 482 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L115 Model Operation Temp Open 115 ...

Страница 12: ...cro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7LN115 Model Operation Temp Open 115 C Close 100 C 230V 25W 1 D460 Fan Propeller Q ty Dia mm Type DATA SUBJECT TO CHANGE WITHOUT NOTICE Micro F VAC External Finish Acrylic baked on enamel finish Internal Controller Yes Yes Aluminum Plate Fin Copper Tube 2 1 4 Face Area 0 595 Coil Rows Heat Exchanger Coil SIC 71FW D490 1 1 8 90 ...

Страница 13: ...cro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7LN115 Model Operation Temp Open 115 C Close 100 C 230V 25W 1 D460 Fan Propeller Q ty Dia mm Type DATA SUBJECT TO CHANGE WITHOUT NOTICE Micro F VAC External Finish Acrylic baked on enamel finish Internal Controller Yes Yes Aluminum Plate Fin Copper Tube 2 1 4 Face Area 0 595 Coil Rows Heat Exchanger Coil SIC 71FW D490 1 1 8 90 ...

Страница 14: ...icro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7LN115 Model Operation Temp Open 115 C Close 100 C 230V 25W 1 D460 Fan Propeller Q ty Dia mm Type DATA SUBJECT TO CHANGE WITHOUT NOTICE Micro F VAC External Finish Acrylic baked on enamel finish Internal Controller Yes Yes Aluminum Plate Fin Copper Tube 2 1 4 Face Area 0 723 Coil Rows Heat Exchanger Coil SIC 71FW D490 1 1 8 90...

Страница 15: ...sor Outdoor heat exchanger sensor AW AN sensor BW BN sensor CW CN sensor DW DN sensor TKS295B TKS292B TKS292B TKS292B TKS292B TKS292B Model No of sensor Sensor Name 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 0 Quantity of Sensor 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 GRF148MR5I GRF198MR5I GRF248MR5I GRF318MR5I Sensor Name Compressor temp sensor TKS293B Model No of sensor 1 1 Quantity of Sensor 1 1 GRF148MR5I ...

Страница 16: ... 790 70 46 336 310 285 4 I D 2 3 6 ID 18 2 I D 1 2 569 15 70 122 158 70 142 46 Wide tube service valve dia 9 52 3 8 2 Narrow tube service valve dia 6 35 1 4 2 Unit mm 3 DIMENSIONAL DATA Outdoor Unit GRF148MR5I 16 ...

Страница 17: ...293 608 136 12 900 85 35 369 345 320 I D 1 8 5 I D 2 3 6 740 18 75 113 150 72 114 51 Wide tube service valve dia 9 52 3 8 2 Narrow tube service valve dia 6 35 1 4 2 Outdoor Unit GRF198MR5I Unit mm 17 ...

Страница 18: ... 320 I D 1 8 5 I D 2 3 6 900 85 740 18 75 70 113 150 72 70 114 51 70 70 Wide tube service valve dia 9 52 3 8 3 Narrow tube service valve dia 6 35 1 4 4 Wide tube service valve dia 12 70 1 2 1 Outdoor Unit GRF248MR5I Unit mm 18 ...

Страница 19: ... 320 I D 1 8 5 I D 2 3 6 900 85 890 18 75 70 113 150 73 70 114 51 70 70 Wide tube service valve dia 9 52 3 8 2 Narrow tube service valve dia 6 35 1 4 4 Wide tube service valve dia 12 70 1 2 2 Outdoor Unit GRF318MR5I Unit mm 19 ...

Страница 20: ...e a min 8 mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm IMPORTANT CAUTION Compressor 4 way valve Main accumulator Sub accumulator Service valve on narrow tube Service valve on wide tube Wide tube BN AN BW AW O D 9 52mm O D 9 52mm Narrow tube O D 6 35m...

Страница 21: ...nsulation should be a min 8 mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm IMPORTANT CAUTION Compressor 4 way valve Main accumulator Sub accumulator Service valve on narrow tube Service valve on wide tube Wide tube BN AN BW AW O D 9 52mm O D 9 52mm Hea...

Страница 22: ...ever try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm IMPORTANT CAUTION Compressor 4 way valve Main accumulator Sub accumulator Service valve on narrow tube Service valve on wide tube Wide tube DN CN BN AN DW CW BW AW O D 9 52mm O D 9 52mm O D 9 52mm O D 12 7mm Narrow tube O D 6 35mm O D 6 35mm...

Страница 23: ...ever try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm IMPORTANT CAUTION Compressor 4 way valve Main accumulator Sub accumulator Service valve on narrow tube Service valve on wide tube Wide tube DN CN BN AN DW CW BW AW O D 9 52mm O D 9 52mm O D 12 7mm O D 12 7mm Narrow tube O D 6 35mm O D 6 35mm...

Страница 24: ... performance chart will vary NOTE Low pressure at wide tube service valve MPaG kgf cm 2 G High pressure at wide tube service valve MPaG kgf cm 2 G Outdoor air temperature C Outdoor air temperature C 30 35 40 1 4 14 2 1 6 16 2 1 2 12 2 1 0 10 2 25 5 0 5 10 15 20 25 3 5 35 7 3 0 30 6 2 5 25 5 2 0 20 4 1 5 15 3 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature ...

Страница 25: ... Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 3 4 2 1 25 Lo fan Hi fan 5 0 5 10 15 20 25 6 7 5 4 3 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 60 55 50 45 40 35 30 25 20 C 17 C Indoor air temp 23 Indoor air temp 23 C Indo...

Страница 26: ...0 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 5 6 4 3 25 Lo fan Hi fan 5 0 5 10 15 20 25 7 8 6 5 4 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 65 60 55 50 45 40 35 30 20 C 17 C Indoor air temp 23 Indoor air tem...

Страница 27: ...perature C Outdoor air temperature C 30 35 40 25 Lo fan Hi fan HH fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 4 5 3 2 25 Lo fan Hi fan HH fan 5 0 5 10 15 20 25 7 8 6 5 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45...

Страница 28: ...r temperature C Outdoor air temperature C 30 35 40 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 5 6 4 3 25 Lo fan Hi fan 5 0 5 10 15 20 25 7 8 6 5 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 10 5 0 5 10 15 20 25 60 55 50 45 40 35 3...

Страница 29: ...perature C Outdoor air temperature C 30 35 40 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 5 6 4 3 25 Lo fan Hi fan 5 0 5 10 15 20 25 7 9 3 5 8 10 4 6 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 3...

Страница 30: ...mperature C 30 35 40 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 7 8 6 5 25 Lo fan Hi fan 5 0 5 10 15 20 25 10 12 6 8 9 11 7 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 35 30 20 C 17 17 C Indoor ...

Страница 31: ...25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 4 5 3 2 25 Lo fan Hi fan HH fan 5 0 5 10 15 20 25 7 8 6 5 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 35 30 25 20 C 17 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 ...

Страница 32: ...0 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 5 6 4 3 25 Lo fan Hi fan 5 0 5 10 15 20 25 7 8 6 5 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 10 5 0 5 10 15 20 25 60 55 50 45 40 35 30 25 20 C 17 C Indoor air temp 23 Indoor air temp...

Страница 33: ...perature C Outdoor air temperature C 30 35 40 25 Lo fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 5 6 4 3 25 Lo fan Hi fan 5 0 5 10 15 20 25 7 9 3 5 8 10 4 6 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 3...

Страница 34: ...5 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 7 8 6 5 25 Lo fan Hi fan 5 0 5 10 15 20 25 10 12 6 8 9 11 7 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 35 30 20 C 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23...

Страница 35: ...fan Hi fan 5 0 5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 8 9 7 6 25 Lo fan Hi fan 5 0 5 10 15 20 25 12 14 8 10 11 13 9 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 8 5 0 5 10 15 20 25 60 55 50 45 40 35 30 20 20 C 17 17 C Indoor air temp 23 Indoor air...

Страница 36: ...rrent A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 4 5 3 25 5 0 5 10 15 20 25 8 9 7 6 5 4 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 55 50 45 40 35 30 25 20 20 C 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 C 20 C 17 C 30 35 40 25 20 15 10 25 2...

Страница 37: ...5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 4 5 3 25 5 0 5 10 15 20 25 7 8 6 5 4 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 55 50 45 40 35 30 25 20 20 C 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 C 20 C 17 C 3...

Страница 38: ...rating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 4 5 6 3 25 5 0 5 10 15 20 25 12 13 10 11 9 8 7 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 55 50 45 40 35 30 25 20 20 C 17 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 C 20 C 17 C 30 35...

Страница 39: ... 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 6 5 7 8 9 4 25 5 0 5 10 15 20 25 14 12 13 11 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 60 55 50 45 40 35 30 25 20 20 C 17 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 C 20 C 17...

Страница 40: ...5 10 15 20 25 Operating current A Operating current A Outdoor air temperature C Outdoor air temperature C 30 35 40 9 8 10 11 12 25 5 0 5 10 15 20 25 14 12 13 11 Indoor discharge air temperature C Indoor discharge air temperature C Outdoor air temperature C Outdoor air temperature C 5 5 0 5 10 15 20 25 60 55 50 45 40 35 30 25 20 C 17 17 C Indoor air temp 23 Indoor air temp 23 C Indoor air temp 23 C...

Страница 41: ...H BW THERMISTOR BN THERMISTOR 4P CONNECTOR BLU 1 2 3 4 W W YEL YEL YEL YEL YEL YEL YEL YEL 1 1 2 2 3 3 4 4 5 5 GRY GRY 5 5 5 4 4 BLK BLK 4 4 4 3 3 YEL YEL 3 3 3 2 2 RED RED 2 2 2 1 1 ORG ORG 1 1 1 DEF1 DEF0 2P CONNECTOR BLK BLK BLK BLU BLU DEF COIL DEFROST VALVE 2 2 1 1 W W RV1 RV0 2P CONNECTOR WHT BLK BLK BLU BLU RV COIL 4WAY VALVE 2 2 1 1 W W L2 L1 E 2 MV0 MAGNETIC COIL 5P CONNECTOR BLU MV1 FAN ...

Страница 42: ... RED PNK REACTANCE CONTROLLER BLK BLK WHT COIL OUTDOOR COIL THERMISTOR COMPRESSOR THERMISTOR RED 2P CONNECTOR OUTDOOR THERMISTOR COMP 1 2 3 4 1 2 1 2 YEL YEL BLK BLK 1 2 3 4 A TH AW THERMISTOR AN THERMISTOR 1 2 3 4 YEL YEL YEL YEL 1 2 3 4 B TH BW THERMISTOR BN THERMISTOR 1 2 3 4 W W YEL YEL YEL YEL 1 2 3 4 5 4 3 2 1 DEF1 DEF0 2P CONNECTOR BLK BLK BLK BLU BLU DEF COIL DEFROST VALVE 2 2 1 1 W W RV1 ...

Страница 43: ... WHT BLK BLK BRN GRY RED BLU FERRITE CORE W ACIN1 W ACIN2 W SI A W SI B FERRITE CORE 3P CONNECTOR COMPRESSOR MOTOR C W S U R V WHT CM BLU WHT RED PNK BLU WHT RED PNK GRN YEL 1 2 3 3 2 1 CRANKCASE HEATER 2P CONNECTOR WHT WHT WHT WHT WHT 1 1 2 2 W W HEATER1 HEATER0 MAGNETIC COIL MV0 5 GRY 5 5 4 BLK 4 4 3 YEL 3 3 2 RED 2 2 1 ORG 1 1 5 4 3 2 1 MV0 MAGNETIC COIL MV1 5 GRY 5 5 4 BLK 4 4 3 YEL 3 3 2 RED ...

Страница 44: ...HT BLK BLK BRN GRY RED BLU FERRITE CORE W ACIN1 W ACIN2 W SI A W SI B FERRITE CORE 3P CONNECTOR 7P CONNECTOR COMPRESSOR MOTOR C W S U R V WHT WHT CM BLU WHT RED PNK BLU WHT RED PNK GRN YEL 1 2 3 3 2 1 CRANKCASE HEATER 2P CONNECTOR WHT WHT WHT WHT WHT 1 1 2 2 W W HEATER1 HEATER0 MAGNETIC COIL MV0 5 GRY 5 5 4 BLK 4 4 3 YEL 3 3 2 RED 2 2 1 ORG 1 1 5 4 3 2 1 MV0 MAGNETIC COIL MV1 5 GRY 5 5 4 BLK 4 4 3...

Страница 45: ...uency then increases The thermostat turns OFF The outdoor unit stops It does not stop if the thermostat for another indoor unit is ON Approximately 30 seconds after the thermostat turns OFF the indoor fan is stopped The indoor fan is stopped The indoor and outdoor temperatures are high The outdoor unit starts automatically after 3 minutes During these 3 minutes a low pressure pressure balance is a...

Страница 46: ...rmed when the outdoor unit is stopped and the temperature of the outdoor unit coil is at or below the L1 line Refer to Fig 1 All indicator lamps turn OFF The indoor and outdoor units stop The operating frequency during defrost is 80 Hz Frequency is lowered if the current peak cut off function is activated The maximum length of a single defrost operation is 12 minutes For the outdoor heat exchanger...

Страница 47: ...n was stopped it is assumed that there has been no significant change in the indoor and outdoor temperatures and the previous conditions COOL are stored Starts operating in the same operating mode COOL and with the same temperature settings as before operation was stopped Operation starts after 4 hours or more have passed New operating mode is determined based on the temperature conditions at the ...

Страница 48: ... is 15 C or higher and is slightly too cold The compressor operates on a 3 minutes ON 6 minutes OFF cycle to prevent the room temperature from dropping too much DRY operation starts DRY A operation The room temperature is below 15 C 1 f fluctuation fan 250 200 6 minute cycle Fig 2 150 100 Step 50 0 When monitoring operation begins the compressor stops and the indoor fan operates at LL very low spe...

Страница 49: ... of HEAT operation Compressor Outdoor fan Solenoid valve for hot gas bypass Temperature of the outdoor heat exchanger is at or above the temperature shown in the table below Temperature of releasing 1 The temperature for releasing of defrosting is 20 C or higher when the outdoor air temperature is less than 0 C Defrost operation has continued for 12 minutes max length Indoor fan 80 Hz operation 4 ...

Страница 50: ... Frequency Hz Trip Hz reduction Hz increase prohibit Hz reduction Hz increase prohibit Hz reduction Hz increase prohibit 16 15 6 0 30 Example of operation during cooling Frequency Frequency Current Stops operation Approx 3 minutes Power Point C Point B Point A 20A 17A 16 6A Target frequency Operates at the target frequency at Point A and below Stops increases to the frequency between Points A and ...

Страница 51: ...ip 5Hz every 30 sec reduction 2Hz every 30 sec reduction No control Increase prohibit range Hz reduction C Compressor discharge temperature 90 Within the increase prohibit range the range changes to the Hz reduction range 2 Hz every 30 seconds if the compressor temperature rises by 2 C Operation starts at 8 Hz and the start current is less than the normal operating current This prevents the flicke...

Страница 52: ...n after the power is turned OFF and some time is required for the charge to dissipate Be careful not to touch any electrified parts before the control circuit board Power Lamp red turns OFF If the outdoor control circuit board is normal approximately 180 seconds will be required for the charge to dissipate However allow at least 30 minutes for the charge to dissipate if it is thought there might b...

Страница 53: ... the nature of the trouble Heat Exchanger Rear side P C Board of Electrical Component Box Error Monitor Lamps Front side Fig 1 View from top ERR0 ERR1 ERR2 ERR3 Power Lamp Error Monitor Lamp Error Contents ERR0 ERR1 ERR2 ERR3 Sensor for compressor discharge temp Sensor for heat excharge temp Sensor for branch pipe A Narrow tube Sensor for branch pipe B Narrow tube Sensor for branch pipe C Narrow t...

Страница 54: ...e outdoor coil temperature sensor connector Non stop defrost The maximum length of defrost operation is 12 minutes Defrost can also be released based on the below conditions for the outdoor heat exchanger sensor However the condition is 20 C or higher when the outdoor air temperature is below 0 C 1 1 Less than 2 minutes Not released 2 minutes or more 14 C or higher No 1 Check items unit operation ...

Страница 55: ...e Coil thermistor Electric expansion valve Branch tubing temperature sensor Breaker Refrigerant gas pressure 1 2 3 4 5 6 7 8 9 10 Operation lamp blinking Operation lamp does not illuminate Indoor fan dose not turn Outdoor unit does not operate Outdoor fan dose not turn 4 way valve does not operate The compressor only does not operate The compressor stops on occasion The compressor speed does not i...

Страница 56: ... electric expansion valve by hand to check it Replace the electric expansion valve This part is normal Check elsewhere Check the illumination of the red Power Lamp Replace the controller Check the coil resistance Use a multi meter to measure the voltage 12 V Model No Sequence GRF148MR5I GRF198MR5I GRF248MR5I GRF318MR5I MV0 MV1 When the power is turned ON the needle will move in the following segue...

Страница 57: ...pressure in the low pressure section is 5 MPa or more below the value in the performance charts 2 There is little condensation on the indoor heat exchanger which overall appears dry Distinguishing between refrigerant shortage and refrigerant circuit blockage If the pressure in the low pressure section does not change when the circuit is charged 2 to 3 times with refrigerant gas 0 44 lbs each time ...

Страница 58: ... Fan motor rotation speed does not change during outdoor unit operation Trouble symptom 5 Fan motor rotation speed varies excessively during outdoor unit operation Remedy for symptom 3 to 5 It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble Therefore first replace the outdoor unit controller then if necessary replace the DC motor Important A Turn...

Страница 59: ...e the specified amount of refrigerant with the new refrigerant at its normal mixed composition state in liquid phase When refrigerant R410A is used the composition will differ depending on whether it is in gaseous or liquid phase and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state Thus always charge the refrigerant while it i...

Страница 60: ...R22 and R407C No addition of compressor oil for R410A No additional charge of compressor oil is permitted No use of refrigerant other than R410A Never use a refrigerant other than R410A If refrigerant R410A is exposed to fire Through welding etc toxic gas may be released when R410A refrigerant is exposed to fire Therefore be sure to provide ample ventilation during installation work Caution in cas...

Страница 61: ...can be com monly used for R22 R407C and R410A CAUTION The above tools specifically for R410A must not be used for R22 and R407C Doing so will cause malfunction of the unit For the above vacuum pump 1 2 and vacuum pump adapter 3 those for R22 type units can be used for R410A type However they must be used exclusively for R410A and never alternately with R22 and R407C For details on tubing installat...

Страница 62: ...place it quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be dam...

Страница 63: ...frigerant cylinder use an electronic scale for charging refrigerant In this case if the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the charging cylinder is less than 20 Also charge the minimum necessary amount to the charging cylinder before using it to c...

Страница 64: ...ing flux and wax for R410A Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum p...

Страница 65: ...R410A for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 9 8 2 Use of Existing Tubing If replacing an older unit that used refrigerant R22 with a R410A unit do not use its existing tubing Instead completely new tubing must be used CAUTION Never charge additional refrigerant if refrigerant is leaking from the unit Follo...

Страница 66: ...INSTALLATION INSTRUCTIONS GRF148MR5I GRF198MR5I GRF248MR5I GRF318MR5I II 852 6 4190 446 00 0 APPENDIX A A 1 ...

Страница 67: ...iagram 5 4 How to Connect Wiring to the Terminal 5 5 Wiring Instructions for the Outdoor Unit 6 TEST RUN 23 7 CONNECTING A HOME AUTOMATION DEVICE 24 8 INSTALLATION CHECK SHEET 24 9 ELECTRIC WIRING DIAGRAM 25 Model Combinations Combine indoor and outdoor units only as listed below Indoor Unit Outdoor Unit MCAF78MR5I GRF148MR5I MCAF98MR5I GRF198MR5I MCAF128MR5I GRF248MR5I MCAF188R5I GRF318MR5I MCAF2...

Страница 68: ...ic shock can occur When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fin gers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to co...

Страница 69: ...f Copper Tube and Insulation Material If you wish to purchase these materials separately from a local source you will need 1 Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2 Cut each tube to the appropriate lengths 30 cm to 40 cm to dampen vibration between units Model Narrow Tube Wide Tube Outer Dia Thickness Outer Dia Thickness MCAF78 6 35 mm 0 8 mm 9 52 mm 0 8 mm MC...

Страница 70: ...st G select a location that will hold the weight of the unit G select a location where tubing and drain hose have the shortest run to the outside Fig 1 G allow room for operation and maintenance as well as unrestricted air flow around the unit Fig 2 G install the unit within the maximum elevation difference H1 H2 H3 H4 above or below the outdoor unit and within a total tubing length L1 L2 L1 L2 L3...

Страница 71: ...2 70 Supplied Reducer ø9 52 ø6 35 ø12 70 ø6 35 ø9 52 B ø9 52 A Outdoor unit Indoor unit MCAF78 98 128MR5I MCAF188R5I ø9 52 ø6 35 ø9 52 ø6 35 ø9 52 B ø9 52 A Outdoor unit Indoor unit MCAF78 98 128MR5I MCAF78 98 128MR5I A B Max Allowable Max Allowable Total Limit of Limit of Elevation Required Amount Tubing Length Tubing Length Total Tubing Length Difference of Additional Model per unit at shipment ...

Страница 72: ...cting indoor unit for GRF248MR5I B Fig 4e ø9 52 ø9 52 ø6 35 ø9 52 ø6 35 ø12 70 ø6 35 C ø9 52 B ø12 70 A MCAF78 98 128MR5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D Outdoor unit Indoor unit MCAF78 98 128MR5I MCAF188R5I C Fig 4f ø15 88 Union ø12 70 Flare ø12 70 ø15 88 Locally purchased ø9 52 ø9 52 ø6 35 ø9 52 ø6 35 ø15 88 ø6 35 C ø9 52 B ø12 70 A MCAF78 98 128MR5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D O...

Страница 73: ...lare ø12 70 ø9 52 Supplied Reducer ø9 52 ø9 52 ø6 35 ø9 52 ø6 35 ø12 70 ø6 35 C ø12 70 B ø12 70 A MCAF78 98 128MR5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D Outdoor unit Indoor unit MCAF78 98 128MR5I MCAF188R5I 7 English D Fig 4g ø15 88 Union ø12 70 Flare ø12 70 ø15 88 Locally purchased ø9 52 ø9 52 ø6 35 ø12 70 ø6 35 ø15 88 ø6 35 C ø9 52 B ø12 70 A MCAF188R5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D Out...

Страница 74: ...9 52 ø6 35 ø9 52 ø6 35 ø15 88 ø6 35 C ø12 70 B ø12 70 A MCAF78 98 128MR5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D Outdoor unit Indoor unit MCAF78 98 128MR5I MCAF248R5I ø9 52 Union ø12 70 Flare ø12 70 ø9 52 Supplied Reducer E Fig 4l ø15 88 Union ø12 70 Flare ø12 70 ø15 88 Locally purchased ø9 52 ø9 52 ø6 35 ø12 70 ø6 35 ø15 88 ø6 35 C ø12 70 B ø12 70 A MCAF188R5I MCAF78 98 128MR5I ø9 52 ø9 52 ø6 35 D...

Страница 75: ...ground level to reduce humidity and protect the unit against possible water damage and decreased service life Fig 5c 1 or 5c 2 G Install cushion rubber under unit s feet to reduce vibration and noise Fig 5d G use lug bolts or equal to bolt down unit reducing vibration and noise G Install in a location where no antenna of a television or radio exists within 3 meters Outdoor unit Hot air Heat source...

Страница 76: ...150 75 73 70 70 70 70 A Service valve on narrow tube side Outer diameter ø6 35 Service valve on wide tube side Outer diameter ø12 70 Service valve on wide tube side Outer diameter ø9 52 A 608 136 12 900 345 320 369 85 740 18 150 72 51 113 75 114 A Outer diameter ø6 35 Outer diameter ø9 52 A Service valve on wide tube side Service valve on narrow tube side Fig 6d unit mm Fig 6c Fig 6b 1 GRF148MR5I ...

Страница 77: ... the figure below are spaces that are required in order to maintain performance Install in a location where the dimensions indicated by are ensured and where 2 or more faces of the unit are unobstructed In principle the top direction should be unobstructed Indoor unit B Indoor unit A Service space Power breaker Ground wire not provided Ensure 15cm of space if a drain hose is to be used Base not pr...

Страница 78: ...performance Install in a location where the dimensions indicated by are ensured and where 2 or more faces of the unit are unobstructed In principle the top direction should be unobstructed Indoor unit C Indoor unit B Indoor unit A Indoor unit D Service space Power breaker Ground wire not provided Ensure 15cm of space if a drain hose is to be used Base not provided concrete or similar material Fast...

Страница 79: ...ared at each end and connected with flare nuts 3 4 Flaring Procedure with a Flare Tool 1 Cut the copper tube to the required length with a tube cutter It is recommended to cut approx 30 50 cm longer than the tubing length you estimate 2 Remove burrs at the end of the copper tube with a tube reamer or file This process is important and should be done carefully to make a good flare Fig 8 3 2 Drain C...

Страница 80: ... proper connection align the union tube and flare tube straight with each other then screw in the flare nut lightly at first to obtain a smooth match Fig 13 3 6 Tubing Connections a Temporary connection Screw in 3 5 rotations by hand Fig 14 b To fasten the flare nuts apply specified torque as Table 4 NOTE NOTE Reamer Copper tubing Fig 9 Flare tool Flare nut Copper tubing Fig 11 Fig 10 Apply refrig...

Страница 81: ...p approx every 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the con densation drain hose splits away from the bundle and drips clear of the unit and the tubing 3 9 Finishing the Installation After finishing insulating and taping over the tubing use sealing putty to seal off the hole in the wall to prevent rain and draft from ente...

Страница 82: ...he wide tube service valve Fig 20 Fig 20 Fig 21 CAUTION Be sure to use a manifold valve for air purging If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept closed CAUTION CAUTION Before using the vacuum pump adapter read the vacuum pump adapter manual and use the adapter correctly In order to prevent charging errors with Air Conditioner th...

Страница 83: ...k then apply the vacuum again 6 With a hex wrench turn the valve stem on the nar row tube service valve counter clockwise by 90 degrees 1 4 turn for 10 seconds and then turn the stem clockwise to close it again 7 With a standard screwdriver turn the wide tube service valve stem counterclockwise to fully open the valve 8 Turn the narrow tube service valve stem counter clockwise to fully open the va...

Страница 84: ...problem 4 Disconnect the manifold gauge and the inter unit tubes and attach the caps and flare nuts At this point pump down is completed If the caps and flare nuts are not reat tached there is the danger of gas leakage Refer to Fig 24 If pump down is not possible If the Air Conditioner cannot be operated because of a malfunc tion or other cause use a refrigerant recovery device to recover the refr...

Страница 85: ...pressor or any moving parts of the fan 6 Unauthorized changes in the internal wiring can be very dangerous The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes 5 2 Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality For field wiring requirements please refer to your local ...

Страница 86: ...llation of a grounding device please observe local electrical codes G Grounding is necessary especially for units using inverter circuits in order to release charged electricity and electrical noise caused by high tension Otherwise electrical shock may occur G Place a dedicated ground more than 2 meters away from other grounds and do not have it shared with other electric appliances WARNING Fig 25...

Страница 87: ...minal screw 4 Shape the loop wire properly place it on the termi nal plate and fix it securely with the removed termi nal screw using a screwdriver I For stranded wiring 1 Cut the wire end with a cutting pliers then strip the insulation to expose the stranded wiring about 10 mm and tightly twist the wire ends Figs 28 and 29 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 ...

Страница 88: ...ndoor unit with refrigerant tubing that is connected to service valve A top of the outdoor unit refrigerant tubing that is connected to service valve B top of the outdoor unit B is the indoor unit with refrigerant tubing that is connected to service valve C top of the outdoor unit C is the indoor unit with refrigerant tubing that is connected to service valve D top of the outdoor unit D is the ind...

Страница 89: ...ndoor unit If 2 units are operated simultaneously it is not possible to correctly check for errors in tubing and wiring G If the room temperature is 15 C or below it may not be possible to check for tubing errors with cooling operation If this occurs perform heating operation for each unit individually and check that warm air is dis charged from each unit If there is cold air mixed in with the war...

Страница 90: ...lly The power and voltage are as specified Inter unit cables are securely fastened to the terminal board Inter unit cables are securely fixed The power cord and inter unit cables are not connected anywhere along their paths The ground wire is securely connected An air purge of the refrigerant circuit has been conducted A leak test of the tubing connections has been performed Thermal insulation has...

Страница 91: ... WHT WHT WHT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 IND LAMP ASSY ROOM COIL 4P WHT DCM 6P BLU CONTROLLER FM FAN MOTOR RED 1 2 3 4 5 6 1 2 3 4 5 6 WHT BLK YEL BLU ROOM THERMISTOR BLK BLK BLK BLK 1 2 3 4 1 2 3 4 COIL THERMISTOR ION 3P WHT HA JEM A 1 2 3 1 2 3 1 2 3 1 2 3 4P WHT 1 2 4 BLK 3 BLK BLK RED WHT 1 2 3 4 1 2 3 4 ION ASSY ION TERMINAL TO OUTDOOR U...

Страница 92: ... 3 4 5 5 MV2 RED ORG 1 2 3 4 1 2 3 4 5 5 MV3 MAGNETIC COIL 1 2 3 4 1 2 4 5 5 MV3 1 2 3 4 1 2 3 4 C TH YEL YEL YEL YEL CW THERMISTOR CN THERMISTOR W W W W W 1 2 3 10 D INDOOR UNIT GRY 1 2 3 4 1 2 3 4 D TH YEL YEL YEL YEL DW THERMISTOR DN THERMISTOR 3 E 1 RED PNK BLK YEL GRY BLK YEL GRY BLK YEL GRY BLK YEL GRY 8FA 2 5257 57100 0 Fig 34c WHT WHT L2 L1 WHT WHT WHT 2P CONNECTOR 2 1 2 1 REACTANCE W W HE...

Страница 93: ...pressor may cause a malfunction NOTE List of Combination Table Name of Combination Table 2 Room Outdoor Unit Combination Table 2 Room Outdoor Unit Combination Table 4 Room Outdoor Unit Combination Table 4 Room Outdoor Unit Combination Table Model No of Outdoor Unit GRF148MR5I GRF198MR5I GRF248MR5I GRF318MR5I Remarks OI 852 6 4181 053 00 0 OI 852 6 4181 054 00 0 OI 852 6 4181 055 00 0 OI 852 6 4181...

Страница 94: ...he rated cooling capacity of the outdoor unit Example When two indoor units are connected If the following holds true Rated cooling capacity of GRF148MR5I outdoor unit C 4 kW Rated cooling capacity of indoor units K1 K2 kW Then It is therefore possible to connect two units with respective capacities of 3 5 3 5 However since this combination is not found in the 2 room operation column of Table 1 op...

Страница 95: ...3 7 2 0 4 8 1 72 2 48 4 2 2 0 5 0 2 2 3 5 5 7 1 51 2 39 3 9 2 0 4 9 1 64 2 76 4 4 2 2 5 3 2 65 2 65 5 3 2 2 4 0 2 0 5 0 2 25 2 25 4 5 2 2 5 5 2 65 3 5 6 15 1 72 2 28 4 0 2 1 5 0 2 08 2 42 4 5 2 4 5 5 Indoor Unit Capacity kW HEATING COOLING Combinations of operatable indoor units GRF148MR5I Rated cooling capacity 4 0 kW 2 room Operation Total Performance Total Performance Single room Operation Indo...

Страница 96: ...d cooling capacity of the outdoor unit Example When two indoor units are connected If the following holds true Rated cooling capacity of GRF198MR5I outdoor unit C 5 6 kW Rated cooling capacity of indoor units K1 K2 kW Then It is therefore possible to connect two units with respective capacities of 5 15 5 15 However since this combination is not found in the 2 room operation column of Table 1 opera...

Страница 97: ...1 65 3 85 5 5 2 1 6 8 2 03 4 87 6 9 2 4 8 4 2 65 2 65 5 3 2 50 2 50 5 2 0 6 3 3 2 3 2 6 45 2 3 8 4 2 65 3 5 6 15 2 24 2 96 5 2 2 1 6 8 3 07 3 58 6 65 2 3 8 4 2 65 5 15 7 8 1 9 3 7 5 6 2 1 6 8 2 74 4 56 7 3 2 4 8 4 3 5 3 5 7 2 7 2 7 5 4 2 0 6 8 3 45 3 45 6 9 2 3 8 4 3 5 5 15 8 65 2 27 3 33 5 6 2 1 6 8 3 01 4 29 7 3 2 4 8 4 2 room Operation Single room Operation Indoor Unit Combination Combinations ...

Страница 98: ...ng capacity of the outdoor unit Example When four indoor units are connected If the following holds true Rated cooling capacity of GRF248MR5I outdoor unit C 6 8 kW Rated cooling capacity of indoor units K1 K2 kW Then It is therefore possible to connect four units with respective capacities of 2 2 2 2 2 2 5 15 However since this combi nation is not found in the 4 room operation column of Table 1 op...

Страница 99: ... 4 9 0 2 2 2 65 2 65 7 5 1 97 2 4 2 4 6 7 2 9 8 1 2 16 3 12 3 12 8 4 3 4 9 0 2 2 2 65 3 5 8 35 1 79 2 16 2 85 6 8 2 9 8 1 2 06 2 97 3 47 8 5 3 4 9 0 2 2 2 65 5 15 10 1 5 1 8 3 5 6 8 2 9 8 1 1 78 2 56 4 26 8 6 3 4 9 0 2 2 3 5 3 5 9 2 1 63 2 59 2 59 6 8 2 9 8 1 1 97 3 31 3 31 8 6 3 4 9 0 2 2 3 5 5 15 10 9 1 38 2 19 3 23 6 8 2 9 8 1 1 69 2 84 4 06 8 6 3 4 9 0 2 65 2 65 2 65 7 95 2 27 2 27 2 27 6 8 2 ...

Страница 100: ... cooling capacity of the outdoor unit Example When four indoor units are connected If the following holds true Rated cooling capacity of GRF318MR5I outdoor unit C 8 kW Rated cooling capacity of indoor units K1 K2 kW Then It is therefore possible to connect four units with respective capacities of 2 2 2 2 3 5 7 1 However since this combina tion is not found in the 4 room operation column of Table 1...

Страница 101: ... 62 3 62 9 4 3 4 9 8 3 5 3 5 3 5 10 5 2 65 2 65 2 65 7 95 2 9 9 0 3 03 3 03 3 03 9 1 3 4 9 8 3 5 3 5 5 15 12 2 2 3 2 3 3 39 8 2 9 9 0 2 73 2 73 3 9 9 35 3 4 9 8 3 5 3 5 7 1 14 1 1 99 1 99 4 03 8 2 9 9 0 2 34 2 34 4 73 9 4 3 4 9 8 3 5 5 15 5 15 13 8 2 03 2 99 2 99 8 2 9 9 0 2 44 3 48 3 48 9 4 3 4 9 8 2 2 2 2 2 2 2 2 8 8 1 88 1 88 1 88 1 88 7 5 2 9 9 2 2 18 2 18 2 18 2 18 8 7 3 4 9 8 2 2 2 2 2 2 2 6...

Страница 102: ...R D 28 Reyrieux BP 131 01601 Trevoux CEDEX France Tel 33 04 74 00 92 92 Fax 33 04 74 00 42 00 http www technibel com ...

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